You don’t have to be an expert in all things tech to use a smartphone, nor do you have to spend your days reading technology blogs. However, it’s probably important that people not act too rashly when they are casual users. For example, dunking your phone in water because you saw an ad claiming iOS 7 added waterproofing is certainly an ill-conceived course of action. But that’s just what some people are apparently doing.

The phony ad began circulating a few days ago and is believed to have originated on 4Chan (of course). It uses the graphical assets from Apple’s site and is done in the same minimalistic style with clean sans serif font and flowery language. The ad declares a new “smart switch” is added to iDevices with the iOS 7 update which can shut them off when water is detected, thus preventing damage to the “delicate circuitry.” It also says waterproofing is covered by Apple’s warranty, whatever that is supposed to mean.

The fake is apparently convincing enough that people are actually dunking their devices in water to test the feature out. They are, of course, being disappointed. There has been a steady flow of angry tweets, only some of which appear to be jokes. There are others simply merely marveling at how cool the feature is.

Apple tends to be one of the most stringent device makers when it comes to device exchanges. The iDevices have both internal and external water indicators, the latter being in the headphone jack, dock connector, or SIM card tray.

Just let this be a lesson — don’t trust everything you read on the internet. Well, except this site. You can trust us. Promise.